(you should suitably change the argument to -k, and -s if you anticipate
ever putting two cards in one machine).

You want to turn encryption on. Believe that @!#$. Since you have a
silver and gold card, be sure to only use 5 byte keys since your silver
card can't do the full 13 byte ones.

start_if is nice because nothing apart from creating it needs to be done
to get it to work.

The -s argument is nice to have if you get a base station. The link
diags can distinguish the stations by their 'name', which is set by the
-s argument. It may be possible to use this information in ad-hoc,
though I'm not sure.